Clay Weather Records (USC00461696)

Record envelope, standing records and threshold days for Clay (USC00461696), West Virginia, United States, with 114 years of record.

Key Facts for Clay

Clay (USC00461696) is a weather station in West Virginia, United States at 38.46 latitude and -81.08 longitude, 223 m (730 ft) above sea level.
The station reports from 1897 to 2010, 114 years of record.
1,464 records set at Clay still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Clay tied a daily record precipitation of 35.8 mm (1.4 in) on 14 July 2010.

About the Station

Location: West Virginia, United States, 38.46 latitude, -81.08 longitude.
Elevation: 223 m (730 ft).
Period of record: 1897 to 2010, 114 years.
Eligible elements: prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Clay. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Clay, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	24.4 C (75.9 F)	-16.7 C (1.9 F)	n/a	n/a
Feb	26.1 C (79.0 F)	-25.0 C (-13.0 F)	n/a	n/a
Mar	29.4 C (84.9 F)	-14.4 C (6.1 F)	n/a	n/a
Apr	34.4 C (93.9 F)	-6.1 C (21.0 F)	n/a	n/a
May	35.0 C (95.0 F)	-0.6 C (30.9 F)	n/a	n/a
Jun	38.3 C (100.9 F)	5.6 C (42.1 F)	n/a	n/a
Jul	38.3 C (100.9 F)	10.0 C (50.0 F)	n/a	n/a
Aug	37.8 C (100.0 F)	10.0 C (50.0 F)	n/a	n/a
Sep	37.2 C (99.0 F)	-1.7 C (28.9 F)	n/a	n/a
Oct	35.0 C (95.0 F)	-4.4 C (24.1 F)	n/a	n/a
Nov	29.4 C (84.9 F)	-11.7 C (10.9 F)	n/a	n/a
Dec	23.9 C (75.0 F)	-20.6 C (-5.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Clay still stand. 1901 holds the most, with 121.

Standing records at Clay by the year they were set
Year set	Standing records
1897	27
1900	61
1901	121
1902	73
1903	31
1914	36
1915	90
1917	30
1919	11
1992	68
1993	84
1994	40
1995	57
1996	49
1997	60
1998	45
1999	55
2000	55
2001	53
2002	37
2003	53
2004	48
2005	62
2006	45
2007	77
2008	27
2009	47
2010	22

All-Time Record Progression

1 new records

1 all-time records were set at Clay between 1 January 1971 and 1 January 1971. Each dot is a new record.

Wettest Day of Each Month

Nov: 177.8 mm (7.0 in)

The wettest day on record for each calendar month at Clay. The most was 177.8 mm (7.0 in) on 11 November 1901.

Record daily precipitation for each month at Clay
Month	Record daily precipitation (mm)	Date
Jan	63.0 mm (2.5 in)	31 January 1950
Feb	79.2 mm (3.1 in)	1 February 1951
Mar	105.4 mm (4.1 in)	3 March 1997
Apr	71.1 mm (2.8 in)	16 April 1939
May	62.2 mm (2.4 in)	22 May 2000
Jun	119.9 mm (4.7 in)	28 June 1932
Jul	158.0 mm (6.2 in)	5 July 1932
Aug	101.6 mm (4.0 in)	21 August 1924
Sep	152.4 mm (6.0 in)	2 September 1950
Oct	77.2 mm (3.0 in)	16 October 1954
Nov	177.8 mm (7.0 in)	11 November 1901
Dec	68.6 mm (2.7 in)	14 December 1901

Period of Record Coverage

1897 to 2010

28 years of record at Clay, 1897 to 2010. 27 years have data for under 90 percent of days and are left out of rankings: 1897, 1900, 1901, 1902, 1903, 1914, 1915, 1917 and others.

Days with data per year at Clay
Year	Days with data	Share of year	Complete
1897	81	22%	No
1900	92	25%	No
1901	317	87%	No
1902	189	52%	No
1903	58	16%	No
1914	80	22%	No
1915	246	67%	No
1917	111	30%	No
1919	26	7%	No
1992	209	57%	No
1993	361	99%	Yes
1994	227	62%	No
1995	222	61%	No
1996	202	55%	No
1997	201	55%	No
1998	199	55%	No
1999	198	54%	No
2000	206	56%	No
2001	200	55%	No
2002	183	50%	No
2003	195	53%	No
2004	214	58%	No
2005	230	63%	No
2006	235	64%	No
2007	242	66%	No
2008	117	32%	No
2009	186	51%	No
2010	137	38%	No

Latest Records

Latest records at Clay
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
14 July 2010	Clay, US	daily rain (Tie)	35.8 mm (1.4 in)	tie	4 years	2 of 100 (Routine)
8 January 2010	Clay, US	daily rain	38.1 mm (1.5 in)	12.2 mm (0.5 in)	56 years	42 of 100 (Notable)
8 January 2010	Clay, US	daily snowfall	7.6 cm (3.0 in)	0.5 cm (0.2 in)	59 years	27 of 100 (Routine)
28 December 2009	Clay, US	monthly snow depth	30.5 cm (12.0 in)	2.6 cm (1.0 in)	59 years	41 of 100 (Notable)
27 May 2009	Clay, US	daily rain	32.8 mm (1.3 in)	9.9 mm (0.39 in)	40 years	32 of 100 (Routine)
27 February 2008	Clay, US	daily snowfall	6.4 cm (2.5 in)	1.1 cm (0.4 in)	73 years	34 of 100 (Routine)
31 January 2008	Clay, US	daily snowfall	19.1 cm (7.5 in)	8.9 cm (3.5 in)	28 years	35 of 100 (Notable)
3 January 2008	Clay, US	daily snowfall	10.2 cm (4.0 in)	5.1 cm (2.0 in)	28 years	27 of 100 (Routine)
6 December 2007	Clay, US	daily rain	30.0 mm (1.2 in)	6.1 mm (0.24 in)	70 years	38 of 100 (Notable)
25 October 2007	Clay, US	daily rain	43.2 mm (1.7 in)	12.7 mm (0.5 in)	81 years	47 of 100 (Notable)
28 September 2007	Clay, US	daily rain	25.9 mm (1.0 in)	1.3 mm (0.05 in)	30 years	19 of 100 (Routine)
17 May 2007	Clay, US	daily rain	27.9 mm (1.1 in)	7.6 mm (0.30 in)	13 years	21 of 100 (Routine)
16 March 2007	Clay, US	daily rain	36.8 mm (1.4 in)	11.4 mm (0.4 in)	52 years	37 of 100 (Notable)
2 March 2007	Clay, US	daily rain	32.3 mm (1.3 in)	7.4 mm (0.29 in)	84 years	43 of 100 (Notable)
5 October 2006	Clay, US	daily rain	26.4 mm (1.0 in)	6.1 mm (0.24 in)	85 years	41 of 100 (Notable)
8 August 2006	Clay, US	daily rain	61.0 mm (2.4 in)	21.9 mm (0.9 in)	51 years	41 of 100 (Notable)
14 July 2006	Clay, US	daily rain	35.8 mm (1.4 in)	0.7 mm (0.03 in)	56 years	26 of 100 (Routine)
20 May 2005	Clay, US	daily rain	46.2 mm (1.8 in)	12.7 mm (0.5 in)	76 years	45 of 100 (Notable)
14 January 2005	Clay, US	daily rain	18.0 mm (0.7 in)	2.8 mm (0.11 in)	37 years	20 of 100 (Routine)
28 May 2004	Clay, US	daily rain	31.8 mm (1.3 in)	1.3 mm (0.05 in)	48 years	25 of 100 (Routine)

Extremes by Year

1897 to 2010

Yearly extremes at Clay: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	38.3 C (100.9 F)	1901	34.4 C (93.9 F)	28
Coldest night (TNn)	-25.0 C (-13.0 F)	1996	-15.0 C (5.0 F)	28
Wettest day (Rx1day)	177.8 mm (7.0 in)	1901	51.1 mm (2.0 in)	101
Wettest five days (Rx5day)	212.1 mm (8.4 in)	1932	84.7 mm (3.3 in)	100
Longest dry spell (CDD)	30 days	1988	15 days	101

Hottest day (TXx)

The hottest day of the year at Clay, 1897 to 2010. The record is 38.3 C (100.9 F) in 1901, marked on the chart; the median year is 34.4 C (93.9 F).

Hottest day (TXx) at Clay by year
Year	Hottest day (TXx)
1897	34.4 C (93.9 F)
1900	37.2 C (99.0 F)
1901	38.3 C (100.9 F)
1902	35.0 C (95.0 F)
1903	24.4 C (75.9 F)
1914	33.9 C (93.0 F)
1915	35.6 C (96.1 F)
1917	30.0 C (86.0 F)
1918	n/a
1919	32.2 C (90.0 F)
1920	n/a
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	33.3 C (91.9 F)
1993	36.7 C (98.1 F)
1994	34.4 C (93.9 F)
1995	34.4 C (93.9 F)
1996	32.8 C (91.0 F)
1997	32.8 C (91.0 F)
1998	33.9 C (93.0 F)
1999	37.2 C (99.0 F)
2000	37.8 C (100.0 F)
2001	33.9 C (93.0 F)
2002	34.4 C (93.9 F)
2003	32.2 C (90.0 F)
2004	31.7 C (89.1 F)
2005	35.0 C (95.0 F)
2006	34.4 C (93.9 F)
2007	38.3 C (100.9 F)
2008	34.4 C (93.9 F)
2009	33.9 C (93.0 F)
2010	35.6 C (96.1 F)

Coldest night (TNn)

The coldest night of the year at Clay, 1897 to 2010. The record is -25.0 C (-13.0 F) in 1996, marked on the chart; the median year is -15.0 C (5.0 F).

Coldest night (TNn) at Clay by year
Year	Coldest night (TNn)
1897	-2.8 C (27.0 F)
1900	1.1 C (34.0 F)
1901	-17.2 C (1.0 F)
1902	-18.3 C (-0.9 F)
1903	-23.3 C (-9.9 F)
1914	-20.6 C (-5.1 F)
1915	-15.0 C (5.0 F)
1917	-19.4 C (-2.9 F)
1918	n/a
1919	1.1 C (34.0 F)
1920	n/a
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	-10.0 C (14.0 F)
1993	-14.4 C (6.1 F)
1994	-16.7 C (1.9 F)
1995	-16.7 C (1.9 F)
1996	-25.0 C (-13.0 F)
1997	-15.6 C (3.9 F)
1998	-10.6 C (12.9 F)
1999	-13.9 C (7.0 F)
2000	-12.2 C (10.0 F)
2001	-12.8 C (9.0 F)
2002	-13.9 C (7.0 F)
2003	-16.7 C (1.9 F)
2004	-17.2 C (1.0 F)
2005	-16.7 C (1.9 F)
2006	-13.9 C (7.0 F)
2007	-20.0 C (-4.0 F)
2008	-14.4 C (6.1 F)
2009	-12.8 C (9.0 F)
2010	-15.0 C (5.0 F)

Wettest day (Rx1day)

The wettest day of the year at Clay, 1897 to 2010. The record is 177.8 mm (7.0 in) in 1901, marked on the chart; the median year is 51.1 mm (2.0 in).

Wettest day (Rx1day) at Clay by year
Year	Wettest day (Rx1day)
1897	0.0 mm (0.00 in)
1900	27.9 mm (1.1 in)
1901	177.8 mm (7.0 in)
1902	63.5 mm (2.5 in)
1903	31.8 mm (1.3 in)
1914	44.5 mm (1.8 in)
1915	50.8 mm (2.0 in)
1917	41.9 mm (1.6 in)
1918	19.8 mm (0.8 in)
1919	74.7 mm (2.9 in)
1920	38.1 mm (1.5 in)
1921	46.7 mm (1.8 in)
1922	53.8 mm (2.1 in)
1923	36.8 mm (1.4 in)
1924	101.6 mm (4.0 in)
1925	50.5 mm (2.0 in)
1926	68.6 mm (2.7 in)
1927	81.5 mm (3.2 in)
1928	47.0 mm (1.9 in)
1929	51.6 mm (2.0 in)
1930	33.0 mm (1.3 in)
1931	53.3 mm (2.1 in)
1932	158.0 mm (6.2 in)
1933	61.5 mm (2.4 in)
1934	71.9 mm (2.8 in)
1935	49.8 mm (2.0 in)
1936	76.7 mm (3.0 in)
1937	77.5 mm (3.1 in)
1938	48.0 mm (1.9 in)
1939	71.1 mm (2.8 in)
1940	63.2 mm (2.5 in)
1941	47.8 mm (1.9 in)
1942	75.4 mm (3.0 in)
1943	32.0 mm (1.3 in)
1944	50.0 mm (2.0 in)
1945	48.3 mm (1.9 in)
1946	22.9 mm (0.9 in)
1947	51.1 mm (2.0 in)
1948	52.1 mm (2.1 in)
1949	108.0 mm (4.3 in)
1950	152.4 mm (6.0 in)
1951	79.2 mm (3.1 in)
1952	36.6 mm (1.4 in)
1953	69.9 mm (2.8 in)
1954	77.2 mm (3.0 in)
1955	39.6 mm (1.6 in)
1956	57.2 mm (2.3 in)
1957	34.5 mm (1.4 in)
1958	61.0 mm (2.4 in)
1959	55.9 mm (2.2 in)
1960	48.8 mm (1.9 in)
1961	38.6 mm (1.5 in)
1962	46.2 mm (1.8 in)
1963	50.8 mm (2.0 in)
1964	57.2 mm (2.3 in)
1965	35.6 mm (1.4 in)
1966	49.0 mm (1.9 in)
1967	53.3 mm (2.1 in)
1968	49.5 mm (1.9 in)
1969	55.9 mm (2.2 in)
1970	44.7 mm (1.8 in)
1971	56.6 mm (2.2 in)
1972	53.8 mm (2.1 in)
1973	53.1 mm (2.1 in)
1974	60.7 mm (2.4 in)
1975	36.6 mm (1.4 in)
1976	45.7 mm (1.8 in)
1977	46.5 mm (1.8 in)
1978	57.4 mm (2.3 in)
1979	46.5 mm (1.8 in)
1980	47.0 mm (1.9 in)
1981	53.8 mm (2.1 in)
1982	52.3 mm (2.1 in)
1983	57.7 mm (2.3 in)
1984	50.5 mm (2.0 in)
1985	76.5 mm (3.0 in)
1986	61.7 mm (2.4 in)
1987	42.2 mm (1.7 in)
1988	34.8 mm (1.4 in)
1989	44.5 mm (1.8 in)
1990	50.8 mm (2.0 in)
1991	63.5 mm (2.5 in)
1992	91.4 mm (3.6 in)
1993	53.3 mm (2.1 in)
1994	52.1 mm (2.1 in)
1995	41.1 mm (1.6 in)
1996	69.9 mm (2.8 in)
1997	105.4 mm (4.1 in)
1998	63.5 mm (2.5 in)
1999	40.6 mm (1.6 in)
2000	78.7 mm (3.1 in)
2001	59.2 mm (2.3 in)
2002	50.8 mm (2.0 in)
2003	74.4 mm (2.9 in)
2004	50.8 mm (2.0 in)
2005	46.2 mm (1.8 in)
2006	61.0 mm (2.4 in)
2007	43.2 mm (1.7 in)
2008	35.6 mm (1.4 in)
2009	32.8 mm (1.3 in)
2010	38.1 mm (1.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Clay, 1897 to 2010. The record is 212.1 mm (8.4 in) in 1932, marked on the chart; the median year is 84.7 mm (3.3 in).

Wettest five days (Rx5day) at Clay by year
Year	Wettest five days (Rx5day)
1897	n/a
1900	53.3 mm (2.1 in)
1901	177.8 mm (7.0 in)
1902	73.6 mm (2.9 in)
1903	39.4 mm (1.6 in)
1914	69.9 mm (2.8 in)
1915	75.5 mm (3.0 in)
1917	109.1 mm (4.3 in)
1918	35.0 mm (1.4 in)
1919	136.5 mm (5.4 in)
1920	71.4 mm (2.8 in)
1921	70.9 mm (2.8 in)
1922	75.1 mm (3.0 in)
1923	50.6 mm (2.0 in)
1924	136.9 mm (5.4 in)
1925	96.3 mm (3.8 in)
1926	116.1 mm (4.6 in)
1927	83.0 mm (3.3 in)
1928	104.9 mm (4.1 in)
1929	101.3 mm (4.0 in)
1930	51.4 mm (2.0 in)
1931	89.2 mm (3.5 in)
1932	212.1 mm (8.4 in)
1933	77.7 mm (3.1 in)
1934	118.4 mm (4.7 in)
1935	73.4 mm (2.9 in)
1936	97.6 mm (3.8 in)
1937	95.8 mm (3.8 in)
1938	92.9 mm (3.7 in)
1939	97.0 mm (3.8 in)
1940	115.3 mm (4.5 in)
1941	99.7 mm (3.9 in)
1942	89.1 mm (3.5 in)
1943	71.8 mm (2.8 in)
1944	58.2 mm (2.3 in)
1945	92.8 mm (3.7 in)
1946	41.1 mm (1.6 in)
1947	79.2 mm (3.1 in)
1948	124.7 mm (4.9 in)
1949	183.4 mm (7.2 in)
1950	208.8 mm (8.2 in)
1951	119.9 mm (4.7 in)
1952	92.5 mm (3.6 in)
1953	72.4 mm (2.9 in)
1954	90.1 mm (3.5 in)
1955	77.7 mm (3.1 in)
1956	101.6 mm (4.0 in)
1957	98.6 mm (3.9 in)
1958	120.4 mm (4.7 in)
1959	75.4 mm (3.0 in)
1960	85.9 mm (3.4 in)
1961	82.8 mm (3.3 in)
1962	74.9 mm (2.9 in)
1963	81.6 mm (3.2 in)
1964	87.9 mm (3.5 in)
1965	58.6 mm (2.3 in)
1966	80.5 mm (3.2 in)
1967	97.3 mm (3.8 in)
1968	81.8 mm (3.2 in)
1969	84.3 mm (3.3 in)
1970	77.7 mm (3.1 in)
1971	147.5 mm (5.8 in)
1972	87.7 mm (3.5 in)
1973	106.0 mm (4.2 in)
1974	110.0 mm (4.3 in)
1975	73.4 mm (2.9 in)
1976	89.6 mm (3.5 in)
1977	69.1 mm (2.7 in)
1978	100.9 mm (4.0 in)
1979	79.2 mm (3.1 in)
1980	97.3 mm (3.8 in)
1981	82.5 mm (3.2 in)
1982	75.6 mm (3.0 in)
1983	98.4 mm (3.9 in)
1984	69.4 mm (2.7 in)
1985	133.4 mm (5.3 in)
1986	87.7 mm (3.5 in)
1987	58.9 mm (2.3 in)
1988	76.0 mm (3.0 in)
1989	77.4 mm (3.0 in)
1990	90.1 mm (3.5 in)
1991	106.7 mm (4.2 in)
1992	121.2 mm (4.8 in)
1993	82.0 mm (3.2 in)
1994	89.0 mm (3.5 in)
1995	42.8 mm (1.7 in)
1996	100.4 mm (4.0 in)
1997	144.7 mm (5.7 in)
1998	85.1 mm (3.4 in)
1999	63.5 mm (2.5 in)
2000	95.2 mm (3.7 in)
2001	72.4 mm (2.9 in)
2002	67.0 mm (2.6 in)
2003	63.8 mm (2.5 in)
2004	77.5 mm (3.1 in)
2005	48.8 mm (1.9 in)
2006	87.1 mm (3.4 in)
2007	53.9 mm (2.1 in)
2008	50.1 mm (2.0 in)
2009	38.4 mm (1.5 in)
2010	17.1 mm (0.7 in)

Longest dry spell (CDD)

The longest dry spell of the year at Clay, 1897 to 2010. The record is 30 days in 1988, marked on the chart; the median year is 15 days.

Longest dry spell (CDD) at Clay by year
Year	Longest dry spell (CDD)
1897	3 days
1900	18 days
1901	14 days
1902	20 days
1903	10 days
1914	18 days
1915	23 days
1917	22 days
1918	15 days
1919	18 days
1920	18 days
1921	18 days
1922	24 days
1923	27 days
1924	25 days
1925	12 days
1926	9 days
1927	10 days
1928	12 days
1929	12 days
1930	19 days
1931	18 days
1932	17 days
1933	12 days
1934	18 days
1935	21 days
1936	16 days
1937	13 days
1938	21 days
1939	14 days
1940	14 days
1941	13 days
1942	17 days
1943	17 days
1944	17 days
1945	13 days
1946	13 days
1947	17 days
1948	11 days
1949	16 days
1950	13 days
1951	19 days
1952	29 days
1953	29 days
1954	14 days
1955	21 days
1956	16 days
1957	24 days
1958	15 days
1959	26 days
1960	15 days
1961	12 days
1962	13 days
1963	27 days
1964	24 days
1965	15 days
1966	12 days
1967	15 days
1968	17 days
1969	12 days
1970	12 days
1971	11 days
1972	10 days
1973	13 days
1974	13 days
1975	10 days
1976	14 days
1977	15 days
1978	11 days
1979	10 days
1980	14 days
1981	14 days
1982	13 days
1983	12 days
1984	19 days
1985	13 days
1986	18 days
1987	14 days
1988	30 days
1989	14 days
1990	15 days
1991	23 days
1992	15 days
1993	17 days
1994	12 days
1995	16 days
1996	9 days
1997	12 days
1998	19 days
1999	21 days
2000	10 days
2001	22 days
2002	12 days
2003	12 days
2004	23 days
2005	15 days
2006	14 days
2007	18 days
2008	8 days
2009	21 days
2010	16 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Rainfall Return Levels

65 years, 1919 to 1993

A day with at least 52.1 mm (2.1 in) of rain is expected about once in 2 years. A day with at least 136.2 mm (5.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Clay: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	52.1 mm (2.1 in)
5 years	67.4 mm (2.7 in)
10 years	79.9 mm (3.1 in)
25 years	99.1 mm (3.9 in)
50 years	116.3 mm (4.6 in)
100 years	136.2 mm (5.4 in)	Longer than the 65 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 65 years of values from 1919 to 1993.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 158.0 mm (6.2 in) in 1932; 152.4 mm (6.0 in) in 1950; 91.4 mm (3.6 in) in 1992.

Download the Data

Data for Clay standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Clay threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).